1. The data for the perceived level of stress of 30 employees and each employee's number of absences in a 120-day period are shown.

• Write the null and alternative hypotheses for the test you suggest conducting to test for significance of difference between the three levels of stress.

• Conduct a two-way ANOVA test on the data in the file. Interpret your findings.

• Discuss the two kinds of variance here, and indicate how they are compared to conclude a significant difference.

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